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Health & Fit Medicinal cannabis not proven in mental health, study finds

16:35  29 october  2019
16:35  29 october  2019 Source:   reuters.com

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Evidence is weak for whether medicinal cannabis treatments can relieve mental illnesses such as anxiety, depression and psychosis, and doctors should prescribe them with great caution, researchers said on Monday.

Evidence is weak for whether medicinal cannabis treatments can relieve mental illnesses such as anxiety, depression and psychosis, and doctors should prescribe them with great caution, researchers said on Monday.

LONDON, Oct 28 (Reuters) - Evidence is weak for whether medicinal cannabis treatments can relieve mental illnesses such as anxiety, depression and psychosis, and doctors should prescribe them with great caution, researchers said on Monday.

  Medicinal cannabis not proven in mental health, study finds © Classen Rafael / EyeEm/Getty Images

In a review of scientific studies that analysed the impact of medicinal cannabinoids on six mental health disorders, the researchers found "a lack of evidence for their effectiveness."

Their findings have important implications for countries such as the United States, Australia, Britain and Canada, where medical cannabis is being made available for patients with certain illness, said Louisa Degenhardt, a drug and alcohol expert at Australia's University of New South Wales in Sydney.

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"Our study provides the first quantitative and well-dated evidence that astronomically driven climate changes in the past caused major human migration events, which then led to the development of genetic diversity Medicinal cannabis not proven in mental health , study finds . October 29, 2019.

The study found that after chronic non-cancer pain, mental health is one of the most common reasons for using medicinal cannabinoids. But no reviews have considered the varying effects of the different types of cannabinoids or their safety, and the only studies into long-term effects were conducted on

"There is a notable absence of high-quality evidence to properly assess the effectiveness and safety of medicinal cannabinoids ... and until evidence from randomised controlled trials is available, clinical guidelines cannot be drawn up around their use in mental health disorders," she said as her results were published in The Lancet Psychiatry journal.

Despite a lack of clinical trial evidence, anecdotally some military veterans and others who suffer post-traumatic stress disorder (PTSD), depression and anxiety say they have found cannabis helpful in easing some of their symptoms. Other conditions cannabis is used for include nausea, epilepsy, and traumatic brain injury, but this study did not examine its impact on those.

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The study found that after chronic non-cancer pain, mental health is one of the most common reasons for using medicinal cannabinoids. Medications that are proven to be effective and aren't addictive already exist for many of the conditions for which cannabis is being used, said Deepak Cyril D'Souza

MOSCOW (Sputnik) – The use of cannabinoids to treat mental health disorders does not help improve symptoms and can actually worsen the patient's condition, particularly if the medicinal cannabis in question is the controversial THC, linked to vaping-related deaths, a new study reveals.

Medicinal cannabinoids include medicinal cannabis and pharmaceutical cannabinoids, as well as their synthetic derivatives, THC, or delta-9-tetrahydrocannabinol - the main psychoactive ingredient of cannabis - and cannabidiol, or CBD.

"Cannabinoids are often advocated as a treatment for various mental health conditions," Degenhardt said. "(But) clinicians and consumers need to be aware of the low quality and quantity of evidence ... and the potential risk of adverse events."

Degenhardt's team sought to look at all available evidence for all types of medicinal cannabinoids. They included all study designs and investigated the impact on remission from and symptoms of depression, anxiety, attention-deficit hyperactivity disorder (ADHD), Tourette syndrome, PTSD and psychosis. They analysed 83 published and unpublished studies covering around 3,000 people between 1980 and 2018.

They found that pharmaceutical THC - either with or without CBD - made psychosis worse, and did not significantly affect any other primary outcomes for the mental illnesses analysed.

It also increased the number of people who reported side effects, and the number who decided to withdraw from a study due to side effects.

Tom Freeman, an addiction and mental health expert at Britain's Bath University who was not involved with the study, said the findings highlighted an urgent need for high-quality trials of medical cannabis to strengthen the evidence - particularly given what he said was "significant demand" from patients. (Editing by Bill Berkrot)

Marijuana edibles may not be as safe as thought, health experts warn .
Edibles might seem safer than vaping or smoking, but they also carry unique risks.Weed edibles have been legal recreationally in Canada since October and are on the cusp of being widely available to the public. They're also popular, according to the 2019 National Cannabis Survey, with 27% of Canadian respondents who used cannabis reporting they'd eaten edibles during the previous three months.

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